B-W manhole cover-cover

ABSTRACT

Depressed manhole covers affect vehicles negatively. The B-W Manhole Cover-Cover is a recycled rubber disc attached to the existing manhole cover with toggle-bolts. It will provide proper elevation.

Street resurfacing is complicated by the myriad manholes that arenecessitated for inspection and maintenance of the sewage systems andunderground utilities. In most cases the elevation of the newly pavedstreet and other road surfaces are at variance with formerly installedmanholes. This condition is frequently left neglected due to timelimitations and construction expense.

A second condition is created when the task of repairing a roadway isundertaken. When the plan is begun there is before the engineer, andeventually the paving contractor, the challenge of maintaining the newgrade at the points of manholes. As a solution the B-W ManholeCover-Cover was developed. It is a duplicate of the standard manholecover only it is made of 65-75 durometer recycled rubber.

To install, align the vent holes and use toggle bolts and fender washersto affix. The Cover-Cover should be just slightly below grade afterinstallation. This will provide a smooth ride for drivers, and it willpermit snow plowing without damage in the winter months.

This is a permanent solution. After installation it is maintenance-free.The benefits of the Cover-Cover consist of ease of storage for stocking,ease and speed of installation, minimal traffic downtime duringinstallation, and a great improvement of public relations for thegovernmental entity, thanks to smoother, safer roadways.

1. A disc of recycled rubber: a. the size and appearance of a standard manhole cover b. to be affixed to an existing manhole cover to elevate it to grade whereby the roadway is smoother and safer to use 